Growth and yield of Brassica species as influenced by sulphur application and sowing dates
DOI:
https://doi.org/10.59797/ija.v47i3.3181Keywords:
Brassica species, Sowing dates, Sulphur, YieldAbstract
A field experiment was conducted during winter (rabr) seasons of 1998 99 and 1999 2000 at Ludhiana, to study the response of Brassica species to sulphur application under different dates of sowing. The crop sown on 15 November gave 14.61 and 17.53 qlha seed yield in 1998 99 and 1999 2000, respectively, which was significantly higher than that of 10 December sown crop. Application of 25 kg Slha resulted in significant increase in yield attributes, seed and oil yield of Brassica species during 1998 99. However, seed and oil yields of 6. species increased significantly with S application up to 50 kglha during 1999 2000. Interaction effects between sowing dates and Brassica species revealed that under delayed sowing on 10 December, B. carinata A. Braun gave significantly higher seed as well as oil yield as compared to B, napus L. during 1999 2000. The seed and oil yield of 15 November sown crop increased significantly up to 50 kg Slha, whereas the response of 10 Decembe sown crop was obtained only up to 25 kg Slha.References
Growth and yield of Brassica species as influenced by sulphur application and sowing dates
RAJENDER KUMAR, DALlP SlNGH AND HARMEET SINGH
Department of Agrono~ny, Plrrzjab Agricultural University, Ludhiana 141 004
~eceived:December 2001
A field experiment was conducted during winter (rabr)seasons of 1998-99 and 1999-2000 at Ludhiana, to study the response of Brassica species to sulphur application under different dates of sowing. The crop sown on 15 November gave 14.61 and 17.53 qlha seed yield in 1998-99 and 1999-2000, respectively, which was significantly higher than that of 10 December-sown crop. Application of 25 kg Slha resulted in significant increase in yield attributes, seed and oil yield of Brassica species during 1998-99. However, seed and oil yields of 6.species increased significantly with S application up to 50 kglha during 1999-2000. Interaction effects between sowing dates and Brassica species
revealed that under delayed sowing on 10 December, B. carinata A. Braun gave
significantly higher seed as well as oil yield as compared to B, napus L. during
-2000. The seed and oil yield of 15 November-sown crop increased
significantly up to 50 kg Slha, whereas the response of 10 Decembe--sown crop
was obtained only up to 25 kg Slha. Key words :Brassica species, Sowing dates, Sulphur, Yield
Brassica species are highly responsive to trends obtained in growth and yield of the sulphur application, as it is a constituent of crop. The information on response of glucathione which plays an important role Brassica species to sulphur under different
in the synthesis of oil. Sulphur requirement dates of sowing is rather limited. The of Brassica species is quite high with the present investigation was undertaken to optimum level ranging from 20 to 60 kglha, assess the sulphur requirement of Brassica depending on the soil status and yield species in relation to sowing dates. potential (Aulakh and Pasricha, 1997). The
MATERIALS AND METHODS
sulphur removal per tonne of produce is the highest (12 kglha) in oilseeds (Tandon, The field investigation was carried out 1986). However, sulphur requirement of during the winter (rabi)seasons of 1998-99 Brassica species may vary under different and 1999-2000 under irrigated conditions
dates of sowing because of differential at Ludhiana. The soil site was sandy loam with pH 7.8, organic carbon 0.12% and 98, 7.5, 97 and 20.4 kg/ha of available N, P, K and S respectively. The experiment was laid out in split-plot design, comprising combinations of 2 sowing dates (15 November and 10 December) and 2 Brassica species (Brassica cnrinata A. Braun and Brassica izapus L.) in main plots and 3 levels of sulphur (0,25 and 50 kglha) in subplots with 4 replications. Direct seeding of Brassica cariizata cv. 'PC 5' was done on 15 November and 10 December with a row spacing of 45 cm, and plant-to- plant spacing of 10 cm was maintained by thinning the crop 15 days after sowing. However, B. izapus was raised through transplanting of 50 days old seedlings of cv. 'GSL 1' on 15 November and 10 December at 45 cm x 10 cm spacing as per recom- mended package o.f practices for its cultivation in the state. Full dose of sulphur as per treatments was applied through gypsum at the time of sowing/transplanting.
RESULTS AND DISCUSSION
Yield-attributing characters
Sowing dates had profound effect on various yield attributes, except siliquael plant (Table 1). The crop sown on 15 November produced 15 and 8% more seeds/ siliqua over 10 Decem-&r-sown crop during crop season of 1998-99 and 1999- 2000 respectively. Similarly, 15 Novcmber- sown crop recorded 11 and 15% higher 1,000-seed weight than 10 December-sown crop during 1998-99 and 1999-2000 respectively. These results confirm the findings of Brar et al. (1998), who reported that yield attributes of Brassica species were reduced significantly when sowing was done beyond 15 November
The yield of Brassica species increased significantly with the application of sulphur at 25 kglha compared with the control during both the years (Table 1). The effect of higher dose of sulphur, i.e. 50 kglha, was found statistically at par with that of 25 kg1
Table 1. Effect of sdwing dates Ad sulphur on yield-attributing characters of Brassica species Treatment Siliquaelplant Seeds/siIiqua 1,000-seed weight (g) 1998-99 1999-2000 1998-99 1999-2000 1998-99 1999-2000
Sowing date
November 237.3 21 8.4 17.38 18.95 3.39 3.47
December 229.0 210.7 15.07 17.63 3.05 . 3.01
CD (P=0.05) . NS NS 0.76 0.77 0.08 0.1 1
Brassica species B. carinata 240.2 219.9 14.37 16.02 3.45 3.39
B. napus CD (P=0.05) 226.1 12.9 209.2 NS 18.08 0.76 20.56 0.77 2.99 0.08 3.1 1 0.11
ha. The magnitude of increase in siliquael of Brassica species. plant, seedslsiliqua and 1,000-seed weight with the application of 25 kg Slha over the Seed yield control was 13 to 10, 14 to 23 and 10 to 8% Sowing of Brassica on 15 November in 1998-99 and 1999-2000 respectively. recorded significantly more seed yield, The favourable effect of sulphur application being 17.6 and 32.5% higher'over delayed on the growth of Brassica species might sowing on 10 December during 1998-99
have enhanced'the production of various and 1999-2000 respective1.y (Table 2).
